Dry-spray gun



W. H. ROSE.

DRY SPRAY GUN.

APPLICATION FILED OCT. 21, 1921.

1,406,904, Patented Feb. 14, 1922.

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@Norueq pensing with the reciprocating piercing de- 1 To all whom it may concern:

1 1mm srA'rEs PATENT oF -"lcr...

2 r WILLIAM H. ROSE, OF JERSEY CITY, NEW JERSEY.

Be it known that 1, WILLIAM H. Ross, a citizen of the United States, and residing at Jersey City, Hudson County, State of New Jersey, have invented certain new and useful Improvements in Dry-Spray Guns, of which the following is'a s ecification- The present invention re ates to a blower or un for spraying dry powdered materia such as insect powders and is in the nature of an improvement upon my Patent No. 1,300,654 dated April 15, 1919. In said patent I have shown and described an apparatus for puncturing ori inal packages of the powder to be spraye and blowing the contents directly from one of the openings thus formed through a suitable nozzle, the chief object being tofpermit of spraying the powder upon lants or animals without having to hand e the package after it is opened, such packages usually containing poisonous material, such asarsenate of lead.

The objects of the present invention are to improve the operation of the spraying machine and cheapen its cost while preserving, its convenience and sanitary features. These objects, are attained by disvice of the prior patent and substituting piercing devices which are fixed or immovable in the operation of the machine, and which permit the air to circulate freely through the powder package, the outlet device being perforated to efiect proper subdivision of the owder. In m' co ending application S. 332,663, filed cto er 23,1919, I have described and claimed one form of such a blower. The invention will be -de-/ scribed in detail in connection with the accompanying drawing in which:

Fig. 1 is a longitudinal section of the sprayer and powder package;

Fig. '2 shows the nozzle detached from the sprayer; and

Fig. 3 shows the commercial powder package adapted to be inserted in the sprayer. p

The spra er comprises an air pump of any desire type, which for convenience may be, and is shown for illustration as a cylindrical hand pump of the, well known bicycle type which upon reciprocation of a piston 1, takes in air through a port 6 and forces it out through a valve 2. The barrel 3 of the pump,.made ofthin'metal, is

extended beyond the partition 4. carrying- DRY- SPRAY GUN.

Specification of Letters Patent. Patented Feb. 14 1922. Application filed October 21,- 1921. Serial mtoaaia.

the valve 2, and forms a chamber 5, ada t- .ed to receive one end of a standard-cylin rierably closed by a diaphragm 8, provided with a hole for air passage, ing stiif metallic tube 9, which is erably sharpened, the container 7. J

The end of the barrel is drawn or spun inwardl to form an annular shoulder 10 and cylin rical flange 11'. A cap is formed of a cylinder 12, of the diameter of the barrel, which is closed by a disc 13, crimped or soldered on. The open end of the cap is turned inwardly to form the flange 14, which with the flange 11 constitutes an airtight friction joint. hus it will be seen that the cap I prefmore readily to pierce tacle adapted to contain a carton of powder.

of lead. One endof the chamber is prefand a register- A delivery or spray nozzle 15 is secured to the disk 13 in register with a perforation therein.- This nozzle may be soldered securely to the disc b a flange 16, and may have its end flattene as shown in Figure 2, for the more effective scattering of the powder. Secured to the nozzle or the disk 13 is a ointed piece 17 which is preferably conical ut may be of any form adapted to ierce the end of the carton of powder.

his cone is rovided with a number of holes 7:. througli which the powder is blown, and serves as strainer and agitator to kee the powder from blowin too freely through and from packing in an around the nozzle opening. 7

The ends of the cartons are made of a material that .may be easily pierced, or if heavy cartons are desired inserts of thinner and more fragile material are provided.

In using the device the cover or cap 12 is removed and a carton of powder inserted into the chamber 5 with sufiicient force to puncture one end on the tube 9. The cap is then forced-on, puncturing the other end with the cone 17 and closin the joint 11, 14. The gun is now ready or spra ing the powder. Reoiprocation of the ban le forces air through the tube 9, and due to the extreme lightness ofthe powder, the air forces its way through the carton and out through the cone, carrying powder with it.

It will be understood that the invention is not limited to the structure shown by way of illustration, and that many modifications thereof will suggest themselves within the scope of the appended claims.

Having thus described the invention, what material, the combination with a package of powder, of a ump device having a chamber fol-holding t 1e package, a tube in the bot tom of the chamber adapted to lpierce the package, a cap for closing the c amber, a nozzle in the cap having associated therewith means to pierce the package, and means for forcing an through the tube thereby blowing powder through the nozzle.

3. In a device for spraying powdered material, the combination with a closed package of powder, of a container for the package and a cover therefor, means for piercing ing air throng both ends of the package when the cover is forced 'on the container, and means for blowing air through said piercing means and through the ackage. I

4. In a device fii terial, the combination with a closed package of powder, of a container for said package,

piercing means in the bottom of the conr spraying powdered matainer, a cover for said container, a nozzle in said cover, said nozzle comprising means for piercing the container and means for straining the owder, and means for blowii both or said piercing means. In a device for spraying powdered material, the combination with a'closed package of powder, of a container for'said package, piercing means in the bottom of the container, a cover for said container forming an airtight joint therewith, a nozzle in the cover, said nozzle comprising means for piercing theeontainer and means for strainmg the powder, and means for blowing air through the package and powder through.

the nozzle.

In testimony whereof I hereunto afiix my signature.

WILLIAM H. ROSE. 

